Multiplexed ultrafast fiber laser emitting multi-state solitons

Area of Science:

• Optics and Photonics
• Nonlinear Dynamics
• Fiber Laser Technology

Background:

• Ultrafast fiber lasers are crucial for industrial applications and studying nonlinear optical dynamics.
• Multiplexed laser systems offer potential for multifunctional laser sources.

Purpose of the Study:

• To demonstrate a bidirectional fiber laser scheme for a multiplexed laser system.
• To validate the simultaneous generation of different soliton types and wavelength control.

Main Methods:

• A passively mode-locked bidirectional fiber laser utilizing nonlinear polarization rotation (NPR).
• The laser cavity features two counter-propagating branches with distinct dispersion characteristics.
• Intra-cavity birefringence management for wavelength selection and tuning.

Main Results:

• Stable conventional solitons (CSs) and dissipative solitons (DSs) generated in clockwise (CW) and counterclockwise (CCW) directions, respectively.
• Wideband wavelength tuning of CS from 1560 nm to 1602 nm.
• Experimentally observed switchable multi-wavelength operations and elucidation of their evolution.

Conclusions:

• The proposed multiplexed fiber laser scheme successfully integrates bidirectional lasing, multi-state soliton emission, wavelength tuning, and multi-wavelength operations.
• This represents the first report of such a multifunctional multiplexed fiber laser.
• The findings are significant for developing advanced ultrafast fiber laser systems for telecommunications, sensing, and signal processing.